'Long delay' in British response to poison probe

Russia complained today about a “long delay” in the British response to a request to send investigators to London for inquiries into the poisoning of former spy Alexander Litvinenko.

The statement was the latest suggestion of tension between Britain and Russia over the probe into the death of Litvinenko, a fierce Kremlin critic who was poisoned by radioactive polonium-210 in London in November and blamed President Vladimir Putin for his death.